Introduction
This portfolio demonstrates the skills learned in VIS 2128 Spatial Analysis with Carole Voulgaris. The webpage was created directly in RStudio.
The portfolio demonstrates each of the following skills:
- Displaying multiple vector layers on the same map
- Calculating and displaying relationships among point and polygon layers based on distance
- Aggregating point data to a layer of polygons
- Calculating and displaying accessibility, based on travel time
- Converting between raster layers and vector layers
- Displaying raster data on a map
- Georeferencing a raster image
- Displaying data on an interactive map
Interactive Maps of Boston
The two interactive maps of Boston, MA analyze the percent of the Black population that identify as female and the percent of Black residents that do not have health insurance coverage.
The two interactive maps demonstrate the following skills:
- Displaying data on an interactive map
Percent Black + Female
This interactive map shows the percent of the total Black or African American Population that identifies as female. Click on each census block to see the pop up and labels with more information on the total Black population and percent of the total Black population that is also female. The data is sourced from the 2010 US Census.
Percent: Black + No Insurance
The second interactive map shows the share of Black or African American residents in each census tract in Boston that do not have health insurance. Click on each census block to see the pop up and labels with more information on the total Black population and percent of the total Black population with no health insurance coverage. The data is from the American Community Survey (ACS) Data from the year 2019.
Maps of Boston
The next set of maps are static maps that analyze the history in Boston, tree coverage, public resources (Community Centers and Public Schools), and overall accessibility.
Historic Map
The purpose of this map is to show the change in open space from 1911 through present day. The 1911 Map contains a wide variety of open space, including the 55-acre Wood Island Park. The present day East Boston Boundary includes additional infill, an expanded airport, and demolished parks. This map uses the Open Space layer and Boston Boundary layer to emphasize how the landscape has changed.
It demonstrates the following skills:
- Georeferencing a raster image
Trees: within Open Space
This map shows the average number and proportion of Trees (points) within each Open Space (polygons) in Boston. The map shows that 29% of all trees in Boston are located within Open Space.
This map demonstrates the following skills:
- Aggregating point data to a layer of polygons
Trees: Close to Schools
This map shows the number of trees (points) within 500 meters of a public school district (polygons).Around 52% of all trees in Boston are within 500 meters of a Public School.
This map demonstrates the following skills:
- Calculating and displaying relationships among point and polygon layers based on distance
Community Center: Walking
This map shows the continuous variation in walking time to a Community Center for any point in the City of Boston. The map visually demonstrates that in most areas of Boston it takes less than 80 minutes to walk to a Community Center, except in East Boston and other islands.
This map demonstrates the following skills:
- Converting between raster layers and vector layers
